EdkModulePkg/Universal/Disk/Partition/Dxe/Gpt.h

   1 /*++
   2
   3 Copyright (c) 2006, Intel Corporation
   4 All rights reserved. This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13
  14   Gpt.h
  15
  16 Abstract:
  17
  18   Data Structures required for detecting GPT Partitions
  19
  20 Revision History
  21
  22 --*/
  23
  24 #ifndef _GPT_H_
  25 #define _GPT_H_
  26
  27 #pragma pack(1)
  28
  29 #define PRIMARY_PART_HEADER_LBA 1
  30
  31 #define EFI_PTAB_HEADER_ID      "EFI PART"
  32
  33 //
  34 // EFI Partition Attributes
  35 //
  36 #define EFI_PART_REQUIRED_TO_FUNCTION 0x0000000000000001
  37
  38 //
  39 // GPT Partition Table Header
  40 //
  41 typedef struct {
  42   EFI_TABLE_HEADER  Header;
  43   EFI_LBA           MyLBA;
  44   EFI_LBA           AlternateLBA;
  45   EFI_LBA           FirstUsableLBA;
  46   EFI_LBA           LastUsableLBA;
  47   EFI_GUID          DiskGUID;
  48   EFI_LBA           PartitionEntryLBA;
  49   UINT32            NumberOfPartitionEntries;
  50   UINT32            SizeOfPartitionEntry;
  51   UINT32            PartitionEntryArrayCRC32;
  52 } EFI_PARTITION_TABLE_HEADER;
  53
  54 //
  55 // GPT Partition Entry
  56 //
  57 typedef struct {
  58   EFI_GUID  PartitionTypeGUID;
  59   EFI_GUID  UniquePartitionGUID;
  60   EFI_LBA   StartingLBA;
  61   EFI_LBA   EndingLBA;
  62   UINT64    Attributes;
  63   CHAR16    PartitionName[36];
  64 } EFI_PARTITION_ENTRY;
  65
  66 //
  67 // GPT Partition Entry Status
  68 //
  69 typedef struct {
  70   BOOLEAN OutOfRange;
  71   BOOLEAN Overlap;
  72 } EFI_PARTITION_ENTRY_STATUS;
  73
  74 #pragma pack()
  75
  76 #endif